progresses, then add a chemical release, over here, likelihood gets higher that would take place, less impact biological and explosive incendiaries. once every two weeks on the average and sometimes 2 -- i have a two in one night my last watch, incendiary incidents happened in the city. the probability it's going to take place, yeah, i'm telling you, on one night we had two incidents take place. people living here in the marina, let's say, did it impact you? no, very low impact. but it happens quite often in san francisco. sizing up, looking at incendiary explosive events, primary danger is obvious. biological chemical -- let's get back here.